10/11 – Payton’s Wednesday Evening Forecast

A weak and slow moving cold front over southeast Mississippi into southeast Louisiana, just
north and west of Lake Pontchartrain, is expected to just drift
southeast over the next 12 hours in response to a large high
pressure dome to the north that is building southeast. Isolated
showers developed this evening along lake and seabreeze
boundaries, in advance of the front over southeast Louisiana and
coastal Mississippi, and this activity may continue for an hour
or two past sunset. After the earlier evening hours, expect dry
weather with somewhat lower humidity air filtering into the
forecast area through Friday. This lower humidity will result in
cooler nighttime and early morning temperatures that will be most
noticeable over the more inland areas and less noticeable along
coastal sections. Unfortunately, the dry air and abundant sunshine
during the day will continue to lead to well above normal high
temperatures in the 85 to 90 degree range on Thursday and upper
80s to around 90 degrees on Friday and Saturday.

A stronger cold front should then push through the forecast area,
although it may be shallow at first since the models indicate
potential for over-running rainfall with the sub-tropical moisture
in place behind the initially shallow frontal boundary Monday
into early Tuesday. We should finally see fairly widespread 50s to
lower 60s for lows Monday and Tuesday nights with the highs also
lowering to the mid 70s to lower 80s.

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